A Tesla Inc. vehicle involved in a fatal crash in March was speeding on a highway with its driver-assistance feature engaged and had alerted the driver to put his hands on the steering wheel more than 15 minutes before the collision, U.S. safety investigators said Thursday.
The Model X electric, sport-utility vehicle accelerated in the final seconds to about 71 miles an hour before the March 23 crash in Mountain View, Calif., according to a preliminary report from the National Transportation Safety Board.
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